Portable air circulator



FIG. 1 is a left side front perspective view of a portable air circulator showing my new design;

FIG. 2 is a right side front perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevation view thereof; and,

FIG. 8 is a right side elevation view thereof.

The broken line showing of environmental structure in FIGS. 1-8 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portable air circulator, as shown and described. 